CN101465386B - Flexible film-like solar cell composite layer - Google Patents
Flexible film-like solar cell composite layer Download PDFInfo
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- CN101465386B CN101465386B CN2008101859040A CN200810185904A CN101465386B CN 101465386 B CN101465386 B CN 101465386B CN 2008101859040 A CN2008101859040 A CN 2008101859040A CN 200810185904 A CN200810185904 A CN 200810185904A CN 101465386 B CN101465386 B CN 101465386B
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- Prior art keywords
- flexible
- layer
- solar cell
- film
- membrane material
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Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention provides a flexibility water proof membrane solar cell compound layer body capable of preventing a conductive section moisture absorption and power output from reducing, wherein a solar cell layer (1) is jointed on a flexibility water proof support membrane material (5), a flexibility adhesive resin layer (9) and a flexibility surface protective membrane layer (10) are covered on the solar cell layer in turn, and further extend outward, thereby jointing on the support membrane material (5). The solar cell layer is sealed. An anode and a cathode conductive sections in the solar cell layer are covered directly by a conductive section damp course or indirectly by the resin layer (9), and a crosslinking resin layer (6) formed between the resin layer (9) and the membrane layer (10) according to demands.
Description
Technical field
The present invention relates to a kind of flexible film-like solar cell composite layer body.Further detailed, the present invention relates to a kind of flexible solar battery cell and moisture resistance and excellent flexible film-like solar cell composite layer body of water proofing property of comprising.The large-scale tent structure thing that flexible film-like solar cell composite layer body of the present invention is rolled as needs or bending is carried or taken in, tent warehouse, velaria, room shape tent, agricultural are useful with the component parts of room, truck hood, shutter etc.
Background technology
The energy of solar cell is the sun, thereby is inexhaustible, can be exhausted unlike the such ground of the fossil energy energy, so solar cell as to the environment zero load, expected preventing the cleaning energy that the global warming contribution degree is the highest.In addition, non-crystal silicon solar cell has can realize and light weight, low cost of manufacture, process advantage such as large tracts of land easily that therefore thinking to become the main flow of solar cell from now on slim.
Existing solar cell uses glass substrate; But consider from lighting, application property, a large amount of productivity aspect, plastic film or metallic film etc. can be produced through the manufacturing approach of utilizing its flexible roll-to-roll (roll to roll) formula as the flexible type solar cell of substrate in a large number.
For the use of existing solar cell on building; It is the roof placed type solar cell that monocrystalline silicon and polysilicon solar cell is placed the roof; Be that the bracing frame method of fixed support solar cell on bracing frame again is being set on the roof, and gradually adopt the directly method of assembling solar battery in recent years on the roof.But actual conditions are, because these methods are all used the module that is made up of glass substrate, thereby are having difficulties aspect operation property, the application property.
On the other hand, through the film like flexible solar battery is integrated at the upper surface that is known as macromolecular sheet materials such as the vulcanized rubber class of roof water-proof sheet material, polyvinyl chloride-base and pitch class unvulcanized rubber, thereby solve the problems referred to above.But if obtain desirable flexibility, then the material of the generating element of existence protection solar cell is limited to the shortcoming of organic material.Its result causes reductions such as moisture resistance, weatherability, tack, thereby has shortened the life-span of solar cell.As the surface protecting material that is used to improve above-mentioned shortcoming, proposed on the fluorine resin film surface, to be formed with the sheet material (for example, patent documentation 1) of silicon oxide film.In addition, also proposed the method (for example, patent documentation 2) of transparent polychlorotrifluoroethylene resin film as surface protective film.
Though the method to utilizing organic material to improve moisture resistance has been carried out various researchs, present situation be for the solar battery cell with desirable flexibility integrated the film material, still not enough aspect durability.
The reason that makes solar cell power generation output reduce is varied, but mainly is such reasons.
(1) moisture absorption of electrode part:
Because the electrode part moisture absorption, resistance value increases, and maximum thereupon output services voltage also reduces.The result causes generating output to reduce.
Constitute because solar module is arranged by the solar battery cell more than at least 1 unit, therefore need to connect anode portion, the negative pole part wire collector electrode separately of each solar battery cell.Therefore, can the lead with conductive adhesive be sticked on and process output on the collector electrode and use lead.
Therefore, must improve moisture absorption because of the adhesive phase of conductive adhesive and cause increase, the result of electrode part resistance value the reducing of output that cause generating electricity.
(2) moisture absorption that causes by flexible surface's protective film layer:
In order to prevent the moisture absorption of solar battery cell; Generally come the covering surfaces protective film, but after the endurance test of having carried out anti-moisture test and weathering test etc., the tack of its interface layer reduces via adhesive resin; Through the moisture absorption from this part, generating output reduces.
Therefore especially need improve the durability of adhering between surface protective film layer and the water proofing property film material.
Patent documentation 1: japanese kokai publication hei 10-308521 communique
Patent documentation 2: TOHKEMY 2006-100527 communique
Summary of the invention
The invention solves the problems referred to above point of existing flexible solar battery structure body; A kind of flexible film-like solar cell composite layer body is provided, and it has flexible fully in practicality, and durability is high; Electrode does not partly have moisture absorption or moisture absorption is few, and prevent absorbent structure adhere to the durability height.
Flexible film-like solar cell composite layer body of the present invention is characterised in that it comprises: flexible water proofing property support membrane material 5; Solar cell layer 1, it is reserved the edge part ground configuration of this flexible water proofing property support membrane material and is bonded on the inside portion of this flexible water proofing property support membrane material; Flexible surface's protective film layer 10, it covers the whole surface of above-mentioned solar cell layer, and further extends continuously to the outside of above-mentioned solar cell layer, engages with the edge part of above-mentioned flexible water proofing property support membrane material; And flexible adhesive resin layer 9, it will be bonded on above-mentioned flexible surface's protective film layer by the whole surface of the above-mentioned solar cell layer of above-mentioned flexible surface's protective film layer covering and the edge part of above-mentioned flexible water proofing property support membrane material.Above-mentioned solar cell layer 1 comprises the flexible solar module 1A more than 1; Above-mentioned each solar module 1A comprises solar battery cell 1a and 1 the current collection connector 1b more than 1; On above-mentioned current collection connector 1b, dispose the anode collector 3 and cathode current collector 4 that constitute 1 pair; Above-mentioned solar battery cell 1a is connected with above-mentioned anode collector via the 7a of anode conducting portion, and is connected with above-mentioned cathode current collector via negative electrode conductive part 7b; And, above-mentioned at least anode conducting 7a of portion and above-mentioned negative electrode conductive part 7b by conductive part damp course 8 directly, or cover indirectly via above-mentioned flexible adhesive resin layer 9.
In flexible film-like solar cell composite layer body of the present invention; Preferably, above-mentioned conductive part damp course 8 is formed by more than one the film in laminate film that is selected from metal evaporation polyester film, metal level and insulative resin film and the metal oxide vapor deposition polyester film.
In flexible film-like solar cell composite layer body of the present invention; Preferably; Above-mentioned flexible surface's protective film layer 10 has 120～200% area of the total surface area of above-mentioned solar cell layer; And the above-mentioned flexible adhesive resin layer that will cover above-mentioned solar cell layer covers fully, and further extends to the outside of above-mentioned flexible adhesive resin layer, joins on the above-mentioned flexible water proofing property support membrane material.
In flexible film-like solar cell composite layer body of the present invention; Preferably, above-mentioned flexible surface's protective film layer 10 ultraviolet-shielding type bond layer of comprising at least 1 layer transparent fluoroplastic film, transparent metal oxide vapor deposition polyester film and they being engaged one another.
In flexible film-like solar cell composite layer body of the present invention; Preferably; Above-mentioned flexible adhesive resin layer 9 is formed by the film of the crosslinked generation resin that comprises the bridging property vinyl-vinyl acetate copolymer; Cover the total surface area of the face side at least of above-mentioned solar cell layer, and further extend, join on the above-mentioned flexible water proofing property support membrane material to the outside of above-mentioned solar cell layer.
In flexible film-like solar cell composite layer body of the present invention; Preferably; Above-mentioned flexible adhesive resin layer 9 further extends between above-mentioned solar cell layer 1 and above-mentioned flexible water proofing property support membrane material 5, and the rear side and the above-mentioned flexible water proofing property support membrane material of above-mentioned solar cell layer is bonding.
In flexible film-like solar cell composite layer body of the present invention; Preferably; Above-mentioned solar cell layer 1 comprises a plurality of flexible solar module 1A, and these flexible solar modules are configured and are bonded on the inside portion of above-mentioned flexible water proofing property support membrane material 5 separately discretely; Above-mentioned flexible surface's protective film layer covers each flexible solar module, and further extends to the outside of above-mentioned flexible solar module, engages with above-mentioned flexible water proofing property support membrane material.
In flexible film-like solar cell composite layer body of the present invention, preferably, above-mentioned anode conducting 7a of portion and negative electrode conductive part 7b are directly covered by above-mentioned conductive part damp course 8 respectively.
In flexible film-like solar cell composite layer body of the present invention; Preferably, the above-mentioned conductive part damp course 8 that directly covers above-mentioned anode conducting 7a of portion and negative electrode conductive part 7b has respectively between above-mentioned flexible adhesive resin layer 9 and the above-mentioned solar cell layer 1 and the conductive part damp course prolongation 8f, the 8g that further extend between above-mentioned flexible adhesive resin layer 9 and the above-mentioned flexible water proofing property support membrane material 5.
In flexible film-like solar cell composite layer body of the present invention; Preferably; Above-mentioned conductive part damp course 8 is disposed between above-mentioned flexible adhesive resin layer 9 and the above-mentioned flexible surface's protective film layer 10, and above-mentioned thus anode conducting 7a of portion and negative electrode conductive part 7b are covered by above-mentioned conductive part damp course 8 via above-mentioned flexible adhesive resin layer 9 indirectly.
In flexible film-like solar cell composite layer body of the present invention; Preferably, engage the edge part 5a of above-mentioned flexible surface's protective film layer 10 and above-mentioned flexible adhesive resin layer 9 and above-mentioned flexible surface's protective film layer 10 and flexible water proofing property support membrane material respectively via bridging property adhering resin layer 6.
In flexible film-like solar cell composite layer body of the present invention, preferably, above-mentioned bridging property adhering resin layer 6 contains the solidfied material that is selected from more than one crosslinking agent in epoxy resin, isocyanate compound and the coupling agent compound.
In flexible film-like solar cell composite layer body of the present invention, preferably, above-mentioned bridging property adhering resin layer 6 contains acrylic resin with primary amine groups, or has in the fluoroolefin-vinyl copolymer resin of hydroxyl and carboxyl any one.
Flexible film-like solar cell duplexer of the present invention has flexible fully in practicality; And; Even when under hot and humid environment, using and for a long time when outdoor application; Also can prevent in output with the moisture absorption of conductor part, but also can prevent the moisture absorption of other generating element of solar battery cell, therefore can reaching prevents to generate electricity exports the effect that reduces.
Description of drawings
Fig. 1: Fig. 1-(A) is the plane key diagram of an example of the formation of flexible film-like solar cell composite layer body of the present invention.
Fig. 1-(B) is the cross-sectional illustration figure of the flexible film-like solar cell composite layer body B-B along the line of Fig. 1-(A).
Fig. 2 is another routine plane key diagram of flexible film-like solar cell composite layer body of the present invention.
Fig. 3: Fig. 3-(a) is the cross-sectional illustration figure of formation of an example of the film of the expression conductive part damp course that is used to form flexible film-like solar cell composite layer body of the present invention.
Fig. 3-(b) is the cross-sectional illustration figure of another routine formation of the expression film that is used to form above-mentioned conductive part damp course.
Fig. 3-(c) is the cross-sectional illustration figure of formation of the another example of the expression film that is used to form above-mentioned conductive part damp course.
Fig. 4: Fig. 4-(a) is the cross-sectional illustration figure of formation of an example of the film of expression flexible surface's protective film layer of being used to form flexible film-like solar cell composite layer body of the present invention.
Fig. 4-(b) is the cross-sectional illustration figure of another routine formation of the expression film that is used to form above-mentioned flexible surface's protective film layer.
Fig. 5 is another routine cross-sectional illustration figure of flexible film-like solar cell composite layer body of the present invention.
Fig. 6 is the cross-sectional illustration figure of the another example of flexible film-like solar cell composite layer body of the present invention.
Fig. 7 is the cross-sectional illustration figure of an example again of flexible film-like solar cell composite layer body of the present invention.
Symbol description
1 solar cell layer
The flexible solar module of 1A
The 1a solar battery cell
1b current collection connector
2 comb electrodes
3 anode collectors
4 cathode current collector
5 flexible water proofing property support membrane materials
6 bridging property adhering resin layers
7a anode conducting portion
7b negative electrode conductive part
8 conductive part damp courses
The 8a polyester film
8b metal evaporation layer
The 8c metal forming
8d insulative resin film
8e metal oxide vapor deposition layer
The prolongation of 8f, 8g conductive part damp course
9 flexible adhesive resin layers
10 flexible surface's protective film layers
11 transparent fluorine-type resin films
12 transparent bond layers
13 transparent polyester films
14 transparent metal oxide vapor deposition layers
15 transparent metal oxide vapor deposition polyester films
Embodiment
Flexible film-like solar cell composite layer body of the present invention comprises shown in Fig. 1 (A), (B): flexible water proofing property support membrane material 5; Solar cell layer 1, it is reserved the edge part ground configuration of this flexible water proofing property support membrane material and is bonded on its inside portion; Flexible surface's protective film layer 10, it covers the whole surface of above-mentioned solar cell layer, and further extends continuously to the outside of above-mentioned solar cell layer, engages with the edge part of above-mentioned flexible water proofing property support membrane material; Flexible adhesive resin layer 9, it will be bonded on above-mentioned flexible surface's protective film layer by the whole surface of the above-mentioned solar cell layer of above-mentioned flexible surface's protective film layer covering and the edge part of above-mentioned flexible water proofing property support membrane material.Preferably, shown in Fig. 1-(B), above-mentioned flexible surface's protective film layer 10 engages with the edge part of above-mentioned flexible adhesive resin layer 9 and flexible water proofing property support membrane material respectively via bridging property adhering resin layer 6.
Above-mentioned flexible surface's protective film layer, bridging property adhering resin layer 6 and flexible adhesive resin layer 9 all can see through sunlight.
In Fig. 1-(A), (B) and Fig. 2; Solar cell layer 1 contains 1 or a plurality of (among Fig. 1-(A) 1; A plurality of among Fig. 2) flexible solar module 1A; This flexible solar module comprises 1 (Fig. 1-(A)) or a plurality of (Fig. 2) solar battery cell 1a, 1 current collection connector 1b respectively, and above-mentioned solar battery cell 1a has a plurality of comb electrodes 2, on above-mentioned current collection connector 1b, has disposed the anode collector 3 and cathode current collector 4 that constitute 1 pair; Above-mentioned solar battery cell 1a is connected with above-mentioned anode collector 3 via the 7a of anode conducting portion, and is connected with above-mentioned cathode current collector 4 via negative electrode conductive part 7b.Positive and negative the two poles of the earth collector electrode of current collection connector 1b is connected with the face side that is configured in flexible water proofing property support membrane material 5 or the anode terminal on the rear side and cathode terminal (not shown) respectively.
At Fig. 1-(A) and (B); Solar cell layer 1 is configured in the lip-deep inside portion of flexible water proofing property support membrane material 5 and reserves edge part; And engage with flexible water proofing property support membrane material 5; Flexible surface's protective film layer 10 covers the whole surface of solar cell layer 1, and further extends to the outside of solar cell layer 1, is bonded on the edge part of flexible water proofing property support membrane material 5.At this moment, flexible surface's protective film layer 10 is bonding with the edge part of solar cell layer 1 and flexible water proofing property support membrane material 5 via flexible adhesive resin layer 9.In addition, preferably,, form crosslinkable resin layer 6 between flexible surface's protective film layer 10 and the flexible adhesive resin layer 9 and between the edge part of flexible surface's protective film layer 10 and flexible water proofing property support membrane material 5.
At Fig. 1-(A) and (B), flexible solar battery cell 1a is preferably film like non-crystal silicon solar cell unit, and, the electric conducting material that constitutes positive and negative the two poles of the earth conductive part 7a, 7b there is not particular restriction, implemented zinc-plated copper wire but use usually.The thickness of each conductive part is preferably 0.02～1mm, and particularly in order to possess good flexibility and bendability, its thickness is 0.05～0.5mm more preferably.In addition; For the back side with positive and negative the two poles of the earth conductive part 7a, 7b can be adhesively fixed on solar battery cell 1a and the current collection connector 1b with switching on; In order to be connected on positive and negative the two poles of the earth collector electrode 3,4, preferably layeredly use conductive adhesive continuously in addition with switching on.
Positive and negative utmost point conductive part 7a, 7b by the excellent conductive part damp course 8 of moisture resistance directly, or cover fully indirectly via above-mentioned flexible adhesive resin layer 9, can prevent or reduce the reduction of the current collecting efficiency that causes by moisture absorption thus.And preferred positive and negative the two poles of the earth collector electrode is also covered by damp course.
In flexible film-like solar cell composite layer body of the present invention; Solar cell layer can comprise the flexible solar module more than 2; At this moment; Configuration and the flexible solar module more than 2 that is engaged on the inside portion of 1 flexible water proofing property support membrane material are covered by common flexible surface's protective film layer, therebetween, also can dispose the continuous flexible adhesive resin layer and the crosslinkable resin adhesive linkage of configuration as required.
In addition; As shown in Figure 2; On the inside portion of 1 flexible water proofing property support membrane material 5, the configuration that is separated from each other also engages the flexible solar module 1A more than 2, and the flexible solar module 1A more than 2 is covered by 1 flexible surface's protective film layer 10 respectively; Flexible surface's protective film layer also can further extend to the outside of flexible solar module, is bonded on the above-mentioned flexible water proofing property support membrane material 5.At this moment, between flexible solar module 1A and its flexible surface's protective film layer of covering, the crosslinkable resin adhesive linkage that can form flexible adhesive resin layer and dispose as required.Thus, in the flexible film-like solar cell composite layer body that obtains,, can access good flexible at the mid portion of a plurality of flexible solar module 1A of configuration with being separated from each other.
Above-mentioned conductive part damp course forms with the side face that the moisture resistance film covers positive and negative the two poles of the earth conductive part 7a, 7b directly or indirectly.The formation of moisture resistance film for example Fig. 3-(a) and (b) and (c) shown in.
In addition; Will be like Fig. 3-(a) and (b) and the moisture resistance film (c) use separately or merge and use; 1) constitutes example as shown in Figure 5; Through only covering the side face of positive and negative the two poles of the earth conductive part 7a, 7b, thereby on 7a of anode conducting portion and negative electrode conductive part 7b, form conductive part damp course 8 respectively; 2) constitute example as shown in Figure 6; Continuous conductive part damp course 8 covers the side face of positive and negative the two poles of the earth conductive part 7a, 7b; And cover the whole surface of solar cell layer 1, and have further to the surface of flexible water proofing property support membrane material 5 and extend and cover this surperficial extension 8f, 8g; In addition; 3) constitute example as shown in Figure 7; Continuous flexible adhesive resin layer 9 covers the side face of positive and negative the two poles of the earth conductive part 7a, 7b, and covers the whole surface of solar cell layer 1, and further extend and cover to the surface of flexible water proofing property support membrane material 5 should the surface; Continuous conductive part damp course 8 covers on the whole surface of said flexible adhesive resin layer 9 continuously, thereby covers positive and negative the two poles of the earth conductive part 7a, 7b indirectly.Conductive part damp course 8 usefulness moisture resistance films shown in Fig. 3-(a) are made up of polyester film 8a and metal evaporation layer 8b.
Metal as vapor deposition on above-mentioned polyester film is preferably selected from the metal in aluminium, tin, titanium, indium, silicon, magnesium, iron, zinc, zirconium, brill, chromium, the nickel etc.In addition, as the method that forms above-mentioned metal evaporation layer, can use arbitrary method such as vacuum vapour deposition, sputtering method, ion plating, various CVD methods, but can especially preferably use vacuum vapour deposition, sputtering method, CVD method.The thickness of metal evaporation layer is preferably 5～500nm, more preferably 10～200nm.
Conductive part damp course 8 usefulness moisture resistance films shown in Fig. 3-(b) are the films that on insulative resin film 8d, are pasted with metal forming 8c.As this metal forming, can preferably use gold, silver, platinum, palladium, aluminium, copper, stainless steel etc.In addition, as the insulative resin film, can use common thermoplastic resin membrane or heat-curing resin film.As the thermoplastic resin membrane, can preferably use the film of Corvic, polyvinyl resin, polystyrene resin, ABS resin, acrylic resin, acrylic resin, polycarbonate resin, polyamide, polyacetal resin, polybutylene terephthalate (PBT) resin etc.On the other hand, as heat-curing resin, can preferably use the film of phenolic resins, Lauxite, melmac, epoxy resin, polyurethane resin etc.In order to strengthen the cementability of metal forming and insulative resin film, can use polyurethane resin, mylar, epoxy resin, acrylic resin etc. as bonding agent.In addition, through the insulative resin film being implemented pre-treatments such as corona treatment, ozone treatment, Cement Composite Treated by Plasma, also can improve cementability with metal forming.
The thickness of metal forming is preferably 1～100 μ m, more preferably 10～50 μ m.
Conductive part damp course 8 usefulness moisture resistance films shown in Fig. 3-(c) are films that vapor deposition has metal oxide vapor deposition layer 8e on polyester film 8a.At this moment, as the metal oxide of vapor deposition on polyester film, can use the oxide of metals such as silicon, aluminium, magnesium, calcium, potassium, sodium, boron, titanium, zirconium, yttrium.Particularly preferably be silica, aluminium oxide, magnesia.
As the method that forms above-mentioned vapor deposition layer, can use arbitrary method such as vacuum vapour deposition, sputtering method, ion plating, various CVD methods, especially preferably use vacuum vapour deposition, sputtering method, CVD method.The thickness of metal oxide vapor deposition layer is preferably 5～500nm, more preferably 10～200nm.
Above-mentioned moisture resistance film is preferred for damp proof covering positive and negative the two poles of the earth collector electrode, is used for damp proof covering solar battery cell or is used for covering together positive and negative the two poles of the earth collector electrode and solar battery cell, more preferably has light transmission.
Flexible adhesive resin as forming above-mentioned flexible adhesive resin layer 9 preferably uses bridging property vinyl-vinyl acetate copolymer composition.The copolymer resin that in the ethylene-vinyl acetate copolymer resin, the content of the construction unit of vinyl acetate is 1～40mol%, be preferably 10～35mol% can use in balance aspect the weatherability of resin, the transparency, the mechanical property well.In addition, in ethane-acetic acid ethyenyl ester copolymer resins composition, in order to improve weatherability, mixed cross-linker makes it have cross-linked structure, as this crosslinking agent, generally can preferably use at the organic peroxide that produces free radical more than 100 ℃.As this organic peroxide, for example can use benzoyl peroxide, cumyl peroxide, 2,5-dimethyl-two (tert-butyl hydroperoxide) hexane, 1; 1-di-tert-butyl peroxide-3; 3,5-trimethyl-cyclohexane, 1,3-two (tert-butyl hydroperoxide) diisopropyl benzene etc.In general, the combined amount of these organic peroxides is preferably below 5 weight portions with respect to 100 parts by weight of ethylene-vinyl acetate copolymer resin, more preferably 1～3 weight portion.Above-mentioned flexible adhesive resin can fusion under 120～170 ℃ temperature, pressure below the 1Torr, can fill space and crosslinking curing between solar cell layer and the flexible surface's protective film layer.
In addition, under the preferable case, above-mentioned flexible adhesive resin layer covers the total surface area of the face side at least of above-mentioned solar cell layer, and extends to its outside, engages with above-mentioned flexible water proofing property support membrane material.Above-mentioned flexible adhesive resin layer under the state of the face side that only covers solar cell layer, the surface area of above-mentioned flexible adhesive resin layer be preferably solar cell layer total surface area 105～150%.The face side area of above-mentioned flexible adhesive resin layer and the surface area of solar cell layer are meant the area in vertical view separately.
If the area of flexible adhesive resin layer be lower than solar cell layer face side total surface area 105%; Then flexible adhesive resin layer can be not exclusively to the covering protection of solar cell layer; The incomplete part generation of the covering moisture absorption of solar cell layer at this moment; And then in the generation of solar battery cell produce the influence that causes by moisture absorption in the generating element of moisture absorption, the for example increase of internal resistance, the output variable that causes thus generating electricity descends.In addition; Under the preferable case; Above-mentioned flexible adhesive resin layer covers each whole surface of face side and the rear side of above-mentioned solar cell layer; Each all has 105～150% area of the total surface area of above-mentioned solar cell layer, and further extends to its outside, engages with above-mentioned flexible water proofing property support membrane material.At this moment; If the area of the flexible adhesive resin layer of face side or rear side be lower than solar cell layer surface area 105%; Then can be incomplete to the covering protection of solar cell layer, this moment solar cell layer the incomplete part generation of covering moisture absorption, thereby in the generation of solar battery cell produce the influence that causes by moisture absorption in the generating element of moisture absorption; The for example increase of internal resistance, the output variable that causes thus generating electricity descends.And, if the long-term contact wetting of solar battery cell then can produce the deterioration of generating element.In addition; When above-mentioned area than greater than 150% the time; The area of flexible adhesive resin layer also can be greater than the area of flexible surface's protective film layer, and the flexible adhesive resin layer that then is exposed to flexible surface's protective film layer outside can be by pollutions such as dust, thereby makes product appearance worsen.
Solar cell layer comprises a plurality of flexible solar modules; These modules dispose with being separated from each other; When each module was covered independently of each other, the surface area of above-mentioned flexible waterproof resin layer preferably was adjusted on each module and is 105～150% of the total surface area of this module.
Flexible surface's protective film layer is preferably formed by transparent fluorine-type resin film.Use transparent fluorine-type resin as this film formation, can use a kind of monomer polymerization resin or the two or more monomer copolymerization resins that are selected from PVF, vinylidene, trifluoro-ethylene, CTFE, tetrafluoroethene, hexafluoropropylene, fluoroalkyl vinyl ethers and the ethene.Especially preferably use the excellent CTFE of moisture resistance.
The thickness of flexible surface's protective film layer is preferably 0.03～0.5mm, is preferably 0.05～0.3mm especially.If thickness is lower than 0.03mm, then moisture resistance can be abundant inadequately, and if above 0.5mm, then flexibility can be abundant inadequately.The light transmittance of flexible surface's protective film layer is preferably more than 80%.If be lower than 80%, then can cause generating output to reduce.
Above-mentioned flexible surface's protective film layer 10 preferably has 120～200% area of the total surface area of above-mentioned solar cell layer; And the above-mentioned flexible adhesive resin layer to covering above-mentioned solar cell layer covers fully; And further extend to its outside, engage with above-mentioned flexible water proofing property support membrane material.The area of above-mentioned flexible surface's protective film layer and solar cell layer is meant the area in each comfortable vertical view.If the area of flexible surface's protective film layer be lower than solar cell layer total surface area 120%; Then flexible surface's protective film layer is incomplete to the covering meeting of solar cell layer and flexible adhesive resin layer; And also insufficient with engaging of flexible water proofing property support membrane material, thus, the moisture absorption of solar cell layer module; Thereby the internal resistance of generating element is increased, cause generating output to reduce.And if it surpasses 200%, then flexible surface's protective film layer excessively covers flexible water proofing property support membrane material, and its result causes resulting flexible film-like solar cell composite layer body to become being difficult to make.Therefore, the edge part that the needs of flexible water proofing property support membrane material are made is preferably reserved the part that is not covered by flexible surface's protective film layer.
As the film that forms flexible surface's protective film layer 10; Shown in Fig. 4-(a); The transparent fluorine-type resin film 11 of preferred use; More preferably use as Fig. 4-clarity films shown in (b), this clarity films is with the transparent metal oxide vapor deposition polyester film 15 that on the one side of polyester film 13, is formed with transparent metal oxide vapor deposition layer 14, with transparent metal oxide vapor deposition layer 14 and above-mentioned transparent fluorine-type resin film 11 opposed modes; Via transparent bond layer 12, engage and integrated obtaining with the single face of transparent fluorine-type resin film 11 with ultraviolet screener effect.The flexible surface's protective film layer that is formed by the stepped construction film that contains such metal oxide vapor deposition layer also preferably has the light transmittance more than 80%.If this light transmittance is lower than 80%, the generating output meeting of the flexible film-like solar cell composite layer body that then obtains is abundant inadequately.
Ultraviolet-shielding type transparency bond layer 12 as the flexible surface's protective film layer 10 shown in Fig. 4-(b) is used bonding agent, can use polyurethane resin, mylar, epoxy resin, acrylic resin etc.In addition, can carry out Corona discharge Treatment, ozone treatment or plasma discharge to the bonding plane of transparent fluorine-type resin film 11 and handle, to improve its cementability.In addition, in order to prevent the uv degradation of transparent metal acidulants vapor deposition polyester film 13, make in the above-mentioned transparent bond layer 12 usefulness bonding agents and contain ultra-violet absorber.As ultra-violet absorber, can use ultraviolet absorbability inorganic compounds such as titanium oxide, zinc oxide, cesium oxide.In order to keep the high transparent of flexible surface's protective film layer, the particle diameter of these inorganic compounds is preferably below the 0.1 μ m.In addition, use organic compound, can use benzophenone, benzotriazole, oxanilide class, cyanoacrylate and triazole type ultra-violet absorber as ultraviolet absorber.With above-mentioned mineral-type ultra-violet absorber and organic type of ultra-violet absorber, can further strengthen ultraviolet shielding effect through also.
In flexible film-like solar cell composite layer body of the present invention; Shown in Fig. 1-(B), preferably engage the edge part of above-mentioned flexible surface's protective film layer 10 and above-mentioned flexible adhesive resin layer 9 and above-mentioned flexible surface's protective film layer 10 and flexible water proofing property support membrane material respectively via bridging property adhering resin layer 6.Above-mentioned bridging property adhering resin comprises adhering resin composition and crosslinking agent composition, can use epoxy compounds, isocyanate compound, coupling agent compound etc. as crosslinking agent.
Use epoxy compounds as above-mentioned crosslinking agent; Can use bisphenol-A, chloropropylene oxide type epoxylite, DGEEG, Polyethylene Glycol Bisglycidyl Ether, propanetriol-diglycidyl-ether, glycerine triglycidyl ether, 1; 6-hexanediol diglycidyl ether, trihydroxymethylpropanyltri diglycidyl ether, diglycidylaniline, diglycidyl amine, N; N, N ', N '-four glycidyl group-m-xylene diamine and 1; 3-two (N, N '-diglycidyl amino methyl) cyclohexane.In addition, also can use with chelating agent, polyurethane resin, synthetic rubber etc. the epoxy resin behind the above-mentioned epoxy resin modification.
In addition, use isocyanate compound, the preferred use: aliphatic diisocyanate class, for example hexamethylene diisocyanate and LDI etc. as crosslinking agent; Ester ring type diisocyanates, for example IPDI and HTDI etc.; Aromatic diisocyanate class, for example toluene di-isocyanate(TDI), methyl diphenylene diisocyanate and XDI etc.; Isocyanuric acid ester class, for example three (hexa-methylene isocyanates) isocyanuric acid ester and three (3-isocyanates methylbenzyl) isocyanuric acid ester etc.; And use end-capping reagents such as phenols, oximes, alcohols, lactams that the NCO end of above-claimed cpd is carried out end-blocking and the blocked isocyanate that obtains etc.
In addition, as coupling agent compound, can use to be selected from least a in silane coupling agent, titanium class coupling agent, zirconium class coupling agent, aluminium class coupling agent and the zirconium aluminium class coupling agent as the crosslinking agent of above-mentioned bridging property adhering resin.As silane coupling agent, can enumerate out: amino silane class, for example gamma-aminopropyl-triethoxy-silane and N-phenyl-gamma-aminopropyl-triethoxy-silane etc.; Epoxy silane class, for example γ-glycidoxy propyl group methyldiethoxysilane, γ-glycidoxypropyltrime,hoxysilane and β-(3, the 4-epoxycyclohexyl) ethyl trimethoxy silane etc.; Vinyl silanes class, for example VTES and vinyl three ('beta '-methoxy ethyoxyl) silane etc.; Hydrosulphonyl silane class, for example γ-Qiu Jibingjisanjiayangjiguiwan etc.
As titanium class coupling agent, can enumerate out: alcoxyl base class, for example tetraisopropoxy titanium, four titanium n-butoxide and four (2-ethyl hexyl oxy) titanium etc.; Acylate class, for example three titanium n-butoxide stearates (tri-n-butoxytitanium stearate) and titanium isopropoxide tristearate (isopropoxytitanium tristearate) etc.As zirconium class coupling agent, can enumerate out: for example tetrabutyl zirconate, four (triethanolamine) zirconate and tetra isopropyl zirconate etc.Can enumerate out as aluminium class coupling agent: acetyl group alkoxyl aluminum-diisopropoxide (acetoalkoxy aluminumdiisopropylate) for example.In addition, as zirconium aluminium class coupling agent, can enumerate out zirconium aluminic acid orthocarbonate (tetrapropyl zircoaluminate).In above-mentioned coupling agent; From moisture-proof, sunproof viewpoint; Especially preferably use the epoxy silane of γ-glycidoxy propyl group methyldiethoxysilane, γ-glycidoxypropyltrime,hoxysilane and β-epoxy silanes such as (3, the 4-epoxycyclohexyl) ethyl trimethoxy silane etc.
The amount of the crosslinking agent that contains in the bridging property adhering resin layer is with respect to the gross mass of bridging property adhering resin layer, preferably in the scope of 0.5～30 quality %.If the content of crosslinking agent is lower than 0.5 quality %, the resistance to water and the cementability of the bridging property adhering resin layer that then obtains can be abundant inadequately.And if its content surpasses 30 quality %, the bridging property adhering resin layer that then obtains meeting hardening, thus make the soft pliable of the flexible film-like solar cell composite layer body that obtains abundant inadequately.
Adhering resin composition in the above-mentioned bridging property adhering resin layer is preferably by being selected from the acrylic resin that contains primary amine groups, or containing in the fluoroolefin-vinyl copolymer resin of hydroxyl and carboxyl any one and form.In having the acrylic resin of primary amine groups, consider, thereby particularly preferably be the acrylic resin that has imported primary amine groups through the carboxyl open loop addition that makes ethylene imine and acrylic resin from reactive, cementability aspect.In addition, in the fluoroolefin-vinyl copolymer resin that contains hydroxyl and carboxyl, consider, particularly preferably be CTFE-vinyl copolymer resin from reactive, durability aspect.
In addition, the surface protective film layer is carried out pre-treatment, can improve cementability with the bridging property adhering resin through corona treatment, ozone treatment and Cement Composite Treated by Plasma etc.
The flexible water proofing property support membrane material 5 of flexible film-like solar cell composite layer body of the present invention is made up of flexible water proofing property sheet material, preferably have the thickness and 150 of 0.1～3.0mm～～2500g/m
2Mass area ratio.Flexible water proofing property sheet material can contain fiber fabric (weaving cotton cloth, compile cloth or nonwoven fabrics) as required as base cloth.At this moment, preferably at least one face of the base cloth that constitutes by fiber fabric, more preferably on two faces, coating or flood flexible water proofing property synthetic resin, thus form flexible waterproof resin layer.Be selected from least a in the following fiber as forming the fiber of base cloth, can using: natural fiber, for example cotton, fiber crops etc. with fiber fabric; Inorfil, for example glass fiber, carbon fiber, metallic fiber etc.; Regenerated fiber, for example viscose, CUP etc.; Semisynthetic fibre, for example oxalic acid fiber and tri acetic acid fiber etc.; And synthetic fibers, the for example polyolefine fiber of the fatty acid polyglycol ester fiber of the polyester fiber (saturated polyester) of the aromatic polyamide fibre of the Fypro of nylon 6, nylon 66 etc., Kevlar (Kevlar) etc., PETG, PEN etc. and acid fiber by polylactic etc., polyarylate fiber, aromatic polyether fiber, polyimide fiber, acrylic fiber, vinylon fiber, polyethylene fibre, polypropylene fibre etc. and polyvinyl chloride fibre etc.The fiber material that forms fiber fabric can be that short staple spinning, long fibre are thread, shape arbitrarily such as split yarn, flat filament.In addition, the formation of fibroid base cloth can be any one in fabric, volume thing, nonwoven fabrics or their compound.
Use flexible waterproof resin as flexible water proofing property support membrane material, can be selected from following resin: Corvic, vistanex, chloridized polyolefin resinoid, ethane-acetic acid ethyenyl ester analog copolymer resin, ethene-(methyl) acrylic acid esters co-polymer resin, ionomer resinoid (salt of ethene-(methyl) acryllic acid analog copolymer etc.), polyurethanes resin, polyester resin (comprising aliphatic polyester-based resin), acrylic resin, fluorine resin, styrene copolymer resin (s-B-S copolymer, styrene-isoprene-styrene copolymer-and their hydride etc.), polyamide-based resin, polyvinyl alcohol resin, ethylene-vinyl alcohol copolymer resin, silicone resin and other synthetic resin (comprising thermoplastic elastomer (TPE)) etc.Above-mentioned water proofing property synthetic resin can use separately or use as two or more mixtures.
Can be at the surface coverage stain-proofing layer of flexible water proofing property support membrane material.Stain-proofing layer is formed by the resin coating film with soil resistance.As the soil resistance resin; For example, can use and be selected from least a in the following synthetic resin: fluorine-type resin, acrylic resin, polyurethanes resin, olefine kind resin, ionomer resinoid, ethane-acetic acid ethyenyl ester analog copolymer resin, ethylene-vinyl alcohol-based copolymer resin, polyvinyl alcohol resin, polyvinyl butyral resin resinoid, cellulosic resin, polyester resin, polycarbonate resin, polyamide-based resin, silicone resin, acrylic acid-silicone resin etc.In the present invention, the preferred use is selected from least a in fluorine-type resin, the acrylic resin.
In another execution mode of flexible adhesive resin layer in flexible film-like solar cell composite layer body of the present invention; As shown in Figure 5; Above-mentioned flexible adhesive resin layer 9 extends between above-mentioned solar cell layer 1 and above-mentioned flexible water proofing property support membrane material 5, and above-mentioned solar cell layer and above-mentioned flexible water proofing property support membrane material is bonding.Through the part of flexible adhesive resin layer that the rear side and the flexible water proofing property support membrane material of solar cell layer is bonding like this; Thereby can remain on the flexible water proofing property support membrane material solar cell layer is bonding securely, thereby can protect solar cell layer.
In another execution mode of the conductive part damp course 8 of flexible film-like solar cell composite layer body of the present invention; As shown in Figure 6; The conductive part damp course 8 that directly covers above-mentioned anode conducting 7a of portion and negative electrode conductive part 7b is respectively between above-mentioned flexible adhesive resin layer 9 and the above-mentioned flexible solar module 1A and further extension between above-mentioned flexible adhesive resin layer 9 and the above-mentioned flexible water proofing property support membrane material 5, thereby has conductive part damp course prolongation 8f, 8g.Thus; Directly cover 2 conductive part damp courses 8 of anode and negative electrode conductive part 7a, 7b, the left and right sides conductive part damp course prolongation 8g that is formed at the middle conductive part damp course prolongation 8f of centre, 2 conductive part inboards and extends to the junction surface of flexible surface's protective film layer and flexible water proofing property support membrane material 5 in the outside of above-mentioned 2 conductive part damp courses 8 forms; Thereby can anode and negative electrode conductive part 7a, 7b and solar module 1A be covered fully, can improve damp proof effect thus solar module 1A.In Fig. 6; The terminal part of left and right sides conductive part damp course prolongation extends in the junction surface of flexible water proofing property support portion material 5 and flexible surface's protective film layer 10 and bridging property adhering resin layer 6; But flexible water proofing property support membrane material 5 also can engage via the bridging property adhering resin layer 6 that extends to wherein with flexible surface's protective film layer 10, and perhaps flexible water proofing property support membrane material 5 also can directly engage with the terminal of flexible surface's protective film layer 10 and bridging property adhering resin layer 6 both sides.
In another execution mode of the conductive part damp course 8 of flexible film-like solar cell composite layer body of the present invention; As shown in Figure 7; Solar cell layer 1 on the flexible water proofing property support membrane material 5 and anode and negative electrode conductive part 7a, 7b are covered by flexible adhesive resin layer 9; Form conductive part damp course 8 on this flexible adhesive resin layer 9, anode and negative electrode conductive part 7a, 7b via flexible adhesive resin layer 9 by the damp proof indirectly covering of above-mentioned conductive part damp course 8.Thus, can use the moisture resistance film easily to form the conductive part damp course 8 that covers anode and negative electrode conductive part 7a, 7b and solar module 1.
In Fig. 7; The left and right end portions of conductive part damp course 8 extends in the junction surface of flexible water proofing property support membrane material and flexible surface's protective film layer 10 and bridging property adhering resin layer 6; But flexible water proofing property support membrane material also can engage via the terminal part that extends to bridging property adhering resin layer 6 therebetween at the end of flexible surface's protective film layer 10, perhaps also can engage with the end of flexible surface's protective film layer 10 and bridging property adhering resin layer 6 respectively.
Embodiment
Through following examples flexible film-like solar cell composite layer body of the present invention is done explanation further.
The cell composite layer body of in following examples and Comparative Examples, making is used to following test.
(1) mensuration of generating output
According to JIS-C8935-1995 the generating output of the sample before and after the environmental test is measured.
(2) moisture-proof
Sample is placed under 85 ℃, the environment of 85%RH, measure the generating output conservation rate of placing after 1000 hours (%), and outward appearance (color and luster, film separation, heave, other) is carried out the evaluation of following four grades.
(ocular estimate)
4: with the compared of measuring before beginning, no change.
3: find slightly painted.
2: find xanthochromia, find to heave, peel off at the local film (flexible surface's protective film layer) that takes place of sample.
1: find xanthochromia, find that at sample film taking place on the whole heaves, peels off.
(3) weatherability
Use the ultra weather resistance test machine that promotes of Metal weather, after under the following condition sample being carried out ultraviolet irradiation, measure its generating output conservation rate, and outward appearance (color and luster, film separation, heave, other) is carried out the evaluation of following four grades.
(experimental condition)
Uitraviolet intensity: 50 (mW/cm
2)
During L (light): 60 ℃ of temperature, humidity 39%, setting-up time 4 hours
During D (dewfall): 60 ℃ of temperature, humidity more than 90%, setting-up time 4 hours
During L and the total time during D: 8 hours
Above condition as 1 cycle, to amount to the test duration of 15 cycles (120 hours) as 1 unit, is carried out totally 10 units, 1200 hours irradiation.
(ocular estimate)
4: with the compared of measuring before beginning, no change.
3: find slightly painted.
2: find xanthochromia, find that in the part of sample film (flexible surface's protective film layer) taking place heaves, peels off.
1: find xanthochromia, find that at sample film taking place on the whole heaves, peels off.
With the size of 10 unit cells is that width is that 260mm, length are the solar battery cell configured in series of 80mm; Then itself and 1 current collection connector are assembled flexible solar module, with this flexible solar module via after the adhering resin stated be layered in width be 1000mm, length be 1500mm flexible water proofing property support membrane material central portion and engage integrated.
As adhering resin, use through coupling agent compound (for example epoxies silane coupler) and epoxy resin (the for example epoxy resin of urethane modification) and crosslinked acrylic resin.
And, use fiber fabric as the base cloth of flexible water proofing property support membrane material, use polyester fiber strand (fiber thickness: 84dtex) as the base cloth plain cloth (mass area ratio: 160g/m of warp, parallel
2, density: 50 of 40/25.4mm of warp, parallel/25.4mm).And, on the base cloth of above-mentioned flexible water proofing property support membrane material, paste following flexible waterproof resin film.
As flexible waterproof resin film, adopt rolling-molding method that following poly (vinyl chloride) resin composition is mixed, rolls, process the film that thickness is 0.15mm.On the surface of above-mentioned base cloth, this film is carried out 165 ℃, 2 minutes thermo-compressed, make flexible water proofing property support membrane material.The mass area ratio of this film material is 500g/m
2
In addition, at the surface coated vinylidene resinoid solution of flexible water proofing property support membrane material, forming thickness is the stain-proofing layer of about 10 μ m.
Vinyl chloride resin 100 weight portions
Phthalic easter plastizer 50 weight portions
Ba-Ca class stabilizer 1 weight portion
Benzotriazole ultra-violet absorber 0.1 weight portion
Pigment (titanium oxide) 5 weight portions
Use in the film substrate laminated flexible member that forms of non-crystal silicon solar cell as solar battery cell.
(thickness is the thickness of 50 μ m, aluminium-vapour deposition layer: the positive and negative the two poles of the earth conductive part that 60nm) comprehensively covers flexible solar module with the aluminium-vapour deposition polyester film with the formation of conductive part damp course.
Used thickness is that 0.6mm, width are that 300mm, length are that the bridging property ethylene-vinyl acetate copolymer resin sheet material (have with respect to the solar cell layer area be 120% area) of 890mm forms flexible adhesive resin layer.
Used thickness is that 50 μ m, width are that 340mm, length are that the fluorine-type resin film (150% the area that is equivalent to the solar battery cell area) of 970mm forms the flexible surface and protects sheet layer; And, apply the bridging property adhering resin at the back side of surface protective film layer.
In addition, use the CTFE film as surface protective film.And, carry out corona treatment as pre-treatment, to improve cementability.
As the bridging property adhering resin, use and carry out the crosslinked acrylic resin that contains primary amine groups that obtains through the crosslinking agent that contains epoxy resin (the for example epoxy resin of urethane modification) and coupling agent compound (for example epoxies silane coupler).
After corona treatment is carried out at the back side of CTFE film, again this bridging property adhering resin solution is carried out the intaglio plate formula and apply, forming dry back thickness is the bond layer of 10 μ m.
The solar cell layer that configuration is engaged in the central portion of above-mentioned flexible water proofing property support membrane material is covered with bridging property ethylene-vinyl acetate copolymer resin sheet material with above-mentioned flexible adhesive resin layer; To be bonded on the flexible water proofing property support membrane material to the extended sheet material edge part in the outside of this solar cell layer; Above that; Covering has flexible surface's protective film of above-mentioned bridging property adhering resin layer and uses the fluorine-type resin film; Thereby above-mentioned bridging property adhering resin layer is engaged with above-mentioned flexible adhesive resin layer, and will join on the flexible water proofing property support membrane material to the extended film edge in the outside of above-mentioned flexible adhesive resin layer portion via above-mentioned bridging property adhering resin layer.
With the duplexer that forms as stated heating in vacuum 10 minutes under the vacuum of 160 ℃ temperature, 1Torr, make all layers bonding integrated, make the flexible film-like solar cell composite layer body, and use it for above-mentioned test.
Through above-mentioned heating in vacuum; Flexible adhesive resin layer is with bridging property ethylene-vinyl acetate copolymer resin sheet material generation fusion; Filled the clearance space between the bridging property adhering resin layer under solar cell layer and the flexible surface's protective film layer, and crosslinked sclerosis has taken place.
Result of the test is as shown in table 1.
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But, use that to have with respect to the solar cell layer area be that the ethylene-tetrafluoroethylene copolymer film (thickness is 50 μ m) of 150% area forms flexible surface's protective film layer.
Result of the test is as shown in table 1.
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But, use that to have with respect to the solar cell layer area be that the polyvinyl fluoride thin film (thickness is 50 μ m) of 150% area forms flexible surface's protective film layer.
Result of the test is as shown in table 1.
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But; Use has with respect to the solar cell layer area and is 150% area and via the acrylic-based adhesives that contains the benzotriazole ultra-violet absorber silica vapor deposition polyester film (thickness is 12 μ m) is layered in Kynoar class film (thickness is 50 μ m) and goes up the laminate film that obtains, and forms flexible surface's protective film layer.
Result of the test is as shown in table 1.
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But,, used through epoxies silane coupler and blocked isocyanate compounds and the crosslinked CTFE-vinyl copolymer resin that contains hydroxyl and carboxyl that obtains as the bridging property adhering resin.
Result of the test is as shown in table 1.
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But, use moisture-proofing film as the conductive part damp course, using via acrylic adhesives is that to be adhered to thickness be the laminate film that obtains on the Corvic film of 100 μ m for the laminate aluminium foil of 50 μ m with thickness.
Result of the test is as shown in table 1.
Embodiment 7
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But,, used the following film material (quality of unit are: 500g/m as flexible water proofing property support membrane material
2): this film material is the ethylene-vinyl acetate copolymer resin composition film (thickness is 0.17mrn) that adopts rolling-molding method that the composition with following composition is mixed, rolls and forms in the surperficial laminated with the same polyester fiber plain cloth base cloth of embodiment 1, and carries out pressurization in 2 minutes, crimping and make and obtain at 130 ℃.
(ethylene-vinyl acetate copolymer resin composition)
Ethylene-vinyl acetate copolymer resin 100 weight portions
Stabilizer (phenolic compound) 0.5 weight portion
Pigment (titanium oxide) 5 weight portions
Result of the test is as shown in table 1.
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But; At the surface of solar cell layer and back side cladding thickness is that 0.6mm, width are that 300mm, length are the bridging property ethylene-vinyl acetate copolymer resin sheet material (have with respect to the solar cell layer area be 120% area) of 890mm, and flexible adhesive resin layer is set on the two sides of solar cell layer.Result of the test is as shown in table 1.
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But the aluminium-vapour deposition polyester film that has omitted the locality of anode conducting portion and negative electrode conductive part covers.The substitute is; (width is that 300mm, length are that 890mm, thickness are the thickness of 50 μ m, silica vapor deposition layer: 60nm) as positive and negative the two poles of the earth conductive part cover layer with silica vapor deposition polyester film; To comprise the whole surface coverage (have be 120% area) of anode conducting portion and negative electrode conductive part and solar battery cell, and form the continuous tectal conductive part damp course of formation that extends to the surface of flexible water proofing property support membrane material as further with respect to the solar cell layer area.Result of the test is as shown in table 1.
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But; The aluminium-vapour deposition polyester film that has omitted the locality of anode conducting portion and negative electrode conductive part covers; But cladding thickness is 0.6mm, width is that 300mm, length are that the bridging property ethylene-vinyl acetate copolymer resin sheet material (have with respect to the solar cell layer area be 120% area) of 890mm forms flexible adhesive resin layer; Silica vapor deposition polyester film further is set on whole of flexible adhesive resin layer, and (width is that 300mm, length are that 890mm, thickness are the thickness of 50 μ m, silica vapor deposition layer: 60nm), form anode conducting portion and negative electrode conductive part are covered damp proof conductive part damp course indirectly.Result of the test is as shown in table 1.
Comparative Examples 1
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But, positive and negative the two poles of the earth conductive part is not carried out the covering of conductive part damp course.
Result of the test is as shown in table 1.
Reference example 1
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But the area of flexible adhesive resin layer that comprises above-mentioned bridging property ethylene-vinyl acetate copolymer resin sheet material is identical with the total surface area of solar cell layer, and does not cover all lateral parts of solar cell layer.
Result of the test is as shown in table 1.
Comparative Examples 2
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But, between solar cell layer and flexible surface's protective film layer, do not form flexible adhesive resin layer.
Result of the test is as shown in table 1.
Reference example 2
Adopt with embodiment 1 same method and make the flexible film-like solar cell composite layer body, and be used for test.But, do not form bridging property adhering resin layer.
Result of the test is as shown in table 1.
Table 1
Claims (12)
1. a flexible film-like solar cell composite layer body is characterized in that, comprises:
Flexible water proofing property support membrane material (5);
Solar cell layer (1), it is reserved the edge part ground configuration of this flexible water proofing property support membrane material and is bonded on the inside portion of this flexible water proofing property support membrane material;
Flexible surface's protective film layer (10); It covers the whole surface of said solar cell layer; And further extend continuously to the outside of said solar cell layer; Engage with the edge part of said flexible water proofing property support membrane material, the thickness of said flexible surface's protective film layer (10) is 0.03～0.5mm; And,
Flexible adhesive resin layer (9), it will be bonded on said flexible surface's protective film layer by the whole surface of the said solar cell layer of said flexible surface's protective film layer covering and the edge part of said flexible water proofing property support membrane material;
Said solar cell layer (1) comprises the flexible solar module (1A) more than 1;
Each said solar module (1A) comprises solar battery cell (1a) and 1 the current collection connector (1b) more than 1;
On said current collection connector (1b), dispose and constitute 1 pair anode collector (3) and cathode current collector (4);
Said solar battery cell (1a) is connected with said anode collector via anode conducting portion (7a), and is connected with said cathode current collector via negative electrode conductive part (7b); And,
At least said anode conducting portion (7a) and said negative electrode conductive part (7b) by conductive part damp course (8) directly, or cover indirectly via said flexible bonding resin layer (9),
And said conductive part damp course (8) is formed by more than one the film in laminate film that is selected from metal evaporation polyester film, metal level and insulative resin film and the metal oxide vapor deposition polyester film.
2. flexible film-like solar cell composite layer body according to claim 1; Wherein, Said flexible surface's protective film layer (10) has 120～200% area of the total surface area of said solar cell layer; And the said flexible adhesive resin layer that will cover said solar cell layer covers fully, and further extends to the outside of said flexible adhesive resin layer, joins on the said flexible water proofing property support membrane material.
3. flexible film-like solar cell composite layer body according to claim 1 and 2; Wherein, said flexible surface's protective film layer (10) ultraviolet-shielding type bond layer of comprising at least 1 layer transparent fluoroplastic film, transparent metal oxide vapor deposition polyester film and they being engaged one another.
4. flexible film-like solar cell composite layer body according to claim 1; Wherein, Said flexible adhesive resin layer (9) is formed by the film of the crosslinked generation resin that comprises the bridging property vinyl-vinyl acetate copolymer; Cover the total surface area of the face side at least of said solar cell layer, and further extend, join on the said flexible water proofing property support membrane material to the outside of said solar cell layer.
5. flexible film-like solar cell composite layer body according to claim 4; Wherein, Said flexible adhesive resin layer (9) further extends between said solar cell layer (1) and said flexible water proofing property support membrane material (5), and the rear side and the said flexible water proofing property support membrane material of said solar cell layer is bonding.
6. flexible film-like solar cell composite layer body according to claim 1; Wherein, Said solar cell layer (1) comprises a plurality of flexible solar modules (1A), and these flexible solar modules are configured and are bonded on the inside portion of said flexible water proofing property support membrane material (5) separately discretely; Said flexible surface's protective film layer covers each flexible solar module, and further extends to the outside of said flexible solar module, engages with said flexible water proofing property support membrane material.
7. flexible film-like solar cell composite layer body according to claim 1, wherein, said anode conducting portion (7a) and negative electrode conductive part (7b) are directly covered by said conductive part damp course (8) respectively.
8. flexible film-like solar cell composite layer body according to claim 7; Wherein, the conductive part damp course (8) that directly covers said anode conducting portion (7a) and negative electrode conductive part (7b) has respectively between said flexible adhesive resin layer (9) and the said solar cell layer (1) and the conductive part damp course prolongation (8f, 8g) that further extends between said flexible adhesive resin layer (9) and the said flexible water proofing property support membrane material (5).
9. flexible film-like solar cell composite layer body according to claim 1; Wherein, Said conductive part damp course (8) is disposed between said flexible adhesive resin layer (9) and the said flexible surface's protective film layer (10); Thus, said anode conducting portion (7a) and negative electrode conductive part (7b) are covered by said conductive part damp course (8) via said flexible adhesive resin layer (9) indirectly.
10. flexible film-like solar cell composite layer body according to claim 1 and 2; Wherein, engage the edge part of said flexible surface's protective film layer (10) and said flexible adhesive resin layer (9) and said flexible surface's protective film layer (10) and flexible water proofing property support membrane material (5) respectively via bridging property adhering resin layer (6).
11. flexible film-like solar cell composite layer body according to claim 10, wherein, said bridging property adhering resin layer (6) contains more than one the solidfied material of crosslinking agent that is selected from epoxy resin, isocyanate compound and the coupling agent compound.
12. flexible film-like solar cell composite layer body according to claim 10; Wherein, said bridging property adhering resin layer (6) contains acrylic resin with primary amine groups, or has in the fluoroolefin-vinyl copolymer resin of hydroxyl and carboxyl any one.
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| Application Number | Priority Date | Filing Date | Title |
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| JP326398/2007 | 2007-12-18 | ||
| JP2007326398 | 2007-12-18 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2009170890A (en) | 2009-07-30 |
| CN101465386A (en) | 2009-06-24 |
| HK1130565A1 (en) | 2009-12-31 |
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